The previous bid for Tokyo to host the 2016 Olympics was not exactly greeted with open arms by the public. Only 55.5%, the lowest level among other candidate cities, supported Tokyo’s bid according to an International Olympic Committee poll.

...

So far opinion polls have also been more favorable than last time, though still lower than the other bidding cities. A nationwide poll taken in January showed that 65.7% of respondents in Tokyo supported the city’s hosting of the 2020 Olympics.

The combination of these two elements paints Tokyo as a safe but uninspired choice, backed by a populace that would need serious stoking before it would fully embrace another Olympic Games.

Madrid

Spain's economy is in a mighty tailspin, and Madrid's contingent sees the Olympics as a potential stimulus.

That argument, however, rubs two ways.

If Madrid wins the bid, and its economy improves as a result, the IOC looks good by association and presumably has more leverage in future host city deliberations.

What's more, the desperate need for economic resuscitation seems to have helped rally public support regarding an Olympic push.

On the rusty side of that coin, the IOC has to gauge whether Spain's economy is strong enough to support a modern Olympics (with all the varnish fans have come to expect).